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Old 24 April 2015, 22:31   #1
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Trailer too bouncy?

Took my 14' RIB to the water for the first time today. I noticed that whenever I went over bumps on the road, I heard bouncing noise from the back. So I took this video of the trailer going over a speed bump.

Is this normal?



Slow motion:

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Old 24 April 2015, 23:31   #2
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Here's a longer slow-mo video. The fun part starts at about 50 second.

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Old 25 April 2015, 01:30   #3
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I think most of the noise is coming from the backrest thumping around,you ain't got too much wind in tyres have you,don't look like engine is bouncing around,I've never towed anything that don't bounce or make strange noises,I think it's the norm.


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Old 25 April 2015, 03:01   #4
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I think if you slowed down it may help.


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Old 25 April 2015, 03:06   #5
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Looking at your slow motion video . Is the winch the only means of strapping between the boat and the trailer
A strap between the transom and the trailer would sort out the issue .
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Old 25 April 2015, 03:14   #6
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looks perfectly normal to me. i dont know about your particular trailer, but normally trailer suspension is really crude (but works) and doesnt have luxuries such as coil springs and dampers. just make sure your tyres are at right pressure so that the suspension does all the moving and not the tyre sidewall as that will generate heat and can cause the tyre to fail
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Old 25 April 2015, 04:00   #7
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Low flyer +1

The other thing to check is the nose weight on the hitch. If it's not heavy enough you can get noise there as it tries to lift off the ball.
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Old 25 April 2015, 04:13   #8
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I don't think you can do much about that, it probably sounds worse than it is, strap the front, back and backrest down a bit better and live with it


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Old 25 April 2015, 23:27   #9
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I bought a 1.5 inch wide ratchet strap to tie down the back of the boat a little.

Click image for larger version

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One thing I could figure out is the short end of the strap (where the ratchet is) is too long and the ratchet will be touching the tube. I ended up looping the strap twice around the trailer frame (loping once isn't enough). But this looks like it will introduce unnecessary tension on the strap. Is there a better way?

Click image for larger version

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I also removed the backrest of the seat for now and tie down the lid

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The transom already had two tie downs

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Will do a test drive tomorrow to see if it makes any improvements.
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Old 26 April 2015, 02:32   #10
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Strap over the tubes is never a good idea.
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